/*
* Copyright (c) 2008-2014, Matt Zucker
*
* This file is provided under the following "BSD-style" License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/

#ifndef _ASSERT_EQUAL_H_
#define _ASSERT_EQUAL_H_

#define assert_equal(x, y) _assert_equal((x), (y), 0, #x, #y, __FILE__, __LINE__)

#define assert_approx_equal(x, y, tol) _assert_equal((x), (y), (tol), #x, #y, __FILE__, __LINE__)

inline void _assert_equal(double x, 
                          double y, 
                          double tol,
                          const char* xstr, 
                          const char* ystr,
                          const char* file,
                          int line) {
  if (fabs(x-y) > tol) {
    std::cerr << file << ":" << line << ": " 
              << xstr << "=" << x << ", " 
              << ystr << "=" << y << "\n";
    abort();
  }
}

#endif
